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    Exam 20: Nuclear Chemistry
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    A 450-Mg Sample of a Newly Discovered Radioactive Nuclide Was Analyzed
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A 450-Mg Sample of a Newly Discovered Radioactive Nuclide Was Analyzed

Question 45

Question 45

Multiple Choice

A 4.50-mg sample of a newly discovered radioactive nuclide was analyzed and found to contain only 3.25 mg after a period of 25.9 h.What is the half-life of the nuclide?


A) 75.0 h
B) 55.2 h
C) 73.5 h
D) 11.4 h
E) 18.9 h

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